My guess is it is dyed. 
Looks like some vanities we did for the big box places.
Best way to test is with an acidic polishing compound.



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On Jan 30, 2015, at 1:01 PM, Nicinski <mail@rocklandstonerestoration.com> wrote:

hart to tell from the pictures if there is pitting in those areas and soap scum is accumulating or maybe is sealed and the sealer dray on top and is reacting with acidic products. I would try marble polishing powder which will remove the sealer and revile perfect granite if that's the case or like Fred said doctored granite loosing dye

On Fri, Jan 30, 2015 at 11:52 AM, Fred Hueston <fhueston@gmail.com> wrote:
Looks like it may be dyed.   have you tested it for dye yet?

On Thu, Jan 29, 2015 at 1:08 PM, Hector Castillo <hectorcastillo@comcast.net> wrote:

Black granite turning white
Hector castillo

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Frederick M. Hueston PhD
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